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Washers 3/4 Belleville SS (Jar 100)
Manufacturer Resources
Product Specs
- Ansi:
- ANSI
- Country Of Origin:
- MUL
- Division:
- Electrical H1
- Field Application:
- Load Bearing Tension Type Application
- Fits Bolt Size:
- 4-Mar IN
- Inside Diameter:
- 25/32 IN
- Outside Diameter:
- 1/5/2016 IN
- Pack Type:
- Jar
- Product Group:
- Fasteners
- Sub Division:
- Electrical-E H2
- Washer Type:
- Conical Washer
- Department:
- Electrical
- Product Subgroup:
- Washers
- Product Length:
- 3.5 in
- Product Height:
- 5.75 in
- Product Material:
- Stainless Steel
- Product Weight:
- 2.1 lbs
- Product Width:
- 3.5 in
Metallics JBWSS34 – Frequently Asked Questions
1) Will a Metallics JBWSS34 Belleville washer fit a 3/4 inch bolt?
Yes. The JBWSS34 is a 3/4 inch Belleville washer with a 25/32 inch inside diameter, so it slips over a 3/4 inch bolt or rod with normal clearance rather than binding on the threads.
2) What is a Belleville washer used for on an electrical ground or bus connection?
A Belleville is a conical spring washer. It gets compressed flat under the nut and keeps constant tension on the joint as the metal expands, contracts, or creeps, which is why it shows up on grounding lugs, busbar bolting, and other load bearing tension connections. The JBWSS34 is listed for load bearing tension type applications.
3) Are these 3/4 inch Belleville washers stainless steel or plated steel?
Stainless steel. That matters for outdoor gear, wet vaults, and dissimilar metal connections where a plated carbon steel washer would rust out and lose clamp load.
4) Can I use a Belleville washer in place of a flat washer or a split lock washer?
They do different jobs. A flat washer only spreads the load and a split lock washer bites the nut, but neither maintains tension once the joint relaxes. A conical Belleville like the JBWSS34 acts as a spring, holding clamp force through thermal cycling. On many bolted electrical connections a flat washer is still used under the Belleville to protect the surface, so plan on both rather than treating the Belleville as a straight swap.
5) Which way does the Belleville washer go on, crown up or crown down?
Crown up, cone facing away from the connection, with the flat side of the dome seated against the flat washer or lug. Tighten until the JBWSS34 is compressed nearly flat; that is the point where the conical spring is carrying the designed tension. Over-flattening past that removes the spring action you bought it for.
6) How many washers come in a jar of Metallics JBWSS34?
100 washers per jar, packaged in a jar rather than a box, and the jar weighs 2.1 lbs. That is a service-truck or shop-shelf quantity for crews doing repeat grounding and bolted connection work.
How fast can I get the Metallics JBWSS34 delivered?
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Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit,
reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Metallics JBWSS34 come with a warranty?
Absolutely. The Metallics JBWSS34 is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Metallics JBWSS34?
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